[thirdparty/git.git] / ls-files.c

/*
 * This merges the file listing in the directory cache index
 * with the actual working directory list, and shows different
 * combinations of the two.
 *
 * Copyright (C) Linus Torvalds, 2005
 */
#include <dirent.h>
#include <fnmatch.h>

#include "cache.h"

static int show_deleted = 0;
static int show_cached = 0;
static int show_others = 0;
static int show_ignored = 0;
static int show_stage = 0;
static int show_unmerged = 0;
static int show_killed = 0;
static int line_terminator = '\n';

static const char *tag_cached = "";
static const char *tag_unmerged = "";
static const char *tag_removed = "";
static const char *tag_other = "";
static const char *tag_killed = "";

static int nr_excludes;
static const char **excludes;
static int excludes_alloc;

static void add_exclude(const char *string)
{
	if (nr_excludes == excludes_alloc) {
		excludes_alloc = alloc_nr(excludes_alloc);
		excludes = realloc(excludes, excludes_alloc*sizeof(char *));
	}
	excludes[nr_excludes++] = string;
}

static void add_excludes_from_file(const char *fname)
{
	int fd, i;
	long size;
	char *buf, *entry;

	fd = open(fname, O_RDONLY);
	if (fd < 0)
		goto err;
	size = lseek(fd, 0, SEEK_END);
	if (size < 0)
		goto err;
	lseek(fd, 0, SEEK_SET);
	if (size == 0) {
		close(fd);
		return;
	}
	buf = xmalloc(size);
	if (read(fd, buf, size) != size)
		goto err;
	close(fd);

	entry = buf;
	for (i = 0; i < size; i++) {
		if (buf[i] == '\n') {
			if (entry != buf + i) {
				buf[i] = 0;
				add_exclude(entry);
			}
			entry = buf + i + 1;
		}
	}
	return;

err:	perror(fname);
	exit(1);
}

static int excluded(const char *pathname)
{
	int i;
	if (nr_excludes) {
		const char *basename = strrchr(pathname, '/');
		basename = (basename) ? basename+1 : pathname;
		for (i = 0; i < nr_excludes; i++)
			if (fnmatch(excludes[i], basename, 0) == 0)
				return 1;
	}
	return 0;
}

struct nond_on_fs {
	int len;
	char name[0];
};

static struct nond_on_fs **dir;
static int nr_dir;
static int dir_alloc;

static void add_name(const char *pathname, int len)
{
	struct nond_on_fs *ent;

	if (cache_name_pos(pathname, len) >= 0)
		return;

	if (nr_dir == dir_alloc) {
		dir_alloc = alloc_nr(dir_alloc);
		dir = xrealloc(dir, dir_alloc*sizeof(ent));
	}
	ent = xmalloc(sizeof(*ent) + len + 1);
	ent->len = len;
	memcpy(ent->name, pathname, len);
	dir[nr_dir++] = ent;
}

/*
 * Read a directory tree. We currently ignore anything but
 * directories, regular files and symlinks. That's because git
 * doesn't handle them at all yet. Maybe that will change some
 * day.
 *
 * Also, we currently ignore all names starting with a dot.
 * That likely will not change.
 */
static void read_directory(const char *path, const char *base, int baselen)
{
	DIR *dir = opendir(path);

	if (dir) {
		struct dirent *de;
		char fullname[MAXPATHLEN + 1];
		memcpy(fullname, base, baselen);

		while ((de = readdir(dir)) != NULL) {
			int len;

			if ((de->d_name[0] == '.') &&
			    (de->d_name[1] == 0 ||
			     !strcmp(de->d_name + 1, ".") ||
			     !strcmp(de->d_name + 1, "git")))
				continue;
			if (excluded(de->d_name) != show_ignored)
				continue;
			len = strlen(de->d_name);
			memcpy(fullname + baselen, de->d_name, len+1);

			switch (DTYPE(de)) {
			struct stat st;
			default:
				continue;
			case DT_UNKNOWN:
				if (lstat(fullname, &st))
					continue;
				if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode))
					break;
				if (!S_ISDIR(st.st_mode))
					continue;
				/* fallthrough */
			case DT_DIR:
				memcpy(fullname + baselen + len, "/", 2);
				read_directory(fullname, fullname,
					       baselen + len + 1);
				continue;
			case DT_REG:
			case DT_LNK:
				break;
			}
			add_name(fullname, baselen + len);
		}
		closedir(dir);
	}
}

static int cmp_name(const void *p1, const void *p2)
{
	const struct nond_on_fs *e1 = *(const struct nond_on_fs **)p1;
	const struct nond_on_fs *e2 = *(const struct nond_on_fs **)p2;

	return cache_name_compare(e1->name, e1->len,
				  e2->name, e2->len);
}

static void show_killed_files(void)
{
	int i;
	for (i = 0; i < nr_dir; i++) {
		struct nond_on_fs *ent = dir[i];
		char *cp, *sp;
		int pos, len, killed = 0;

		for (cp = ent->name; cp - ent->name < ent->len; cp = sp + 1) {
			sp = strchr(cp, '/');
			if (!sp) {
				/* If ent->name is prefix of an entry in the
				 * cache, it will be killed.
				 */
				pos = cache_name_pos(ent->name, ent->len);
				if (0 <= pos)
					die("bug in show-killed-files");
				pos = -pos - 1;
				while (pos < active_nr &&
				       ce_stage(active_cache[pos]))
					pos++; /* skip unmerged */
				if (active_nr <= pos)
					break;
				/* pos points at a name immediately after
				 * ent->name in the cache.  Does it expect
				 * ent->name to be a directory?
				 */
				len = ce_namelen(active_cache[pos]);
				if ((ent->len < len) &&
				    !strncmp(active_cache[pos]->name,
					     ent->name, ent->len) &&
				    active_cache[pos]->name[ent->len] == '/')
					killed = 1;
				break;
			}
			if (0 <= cache_name_pos(ent->name, sp - ent->name)) {
				/* If any of the leading directories in
				 * ent->name is registered in the cache,
				 * ent->name will be killed.
				 */
				killed = 1;
				break;
			}
		}
		if (killed)
			printf("%s%.*s%c", tag_killed,
			       dir[i]->len, dir[i]->name,
			       line_terminator);
	}
}

static void show_files(void)
{
	int i;

	/* For cached/deleted files we don't need to even do the readdir */
	if (show_others || show_killed) {
		read_directory(".", "", 0);
		qsort(dir, nr_dir, sizeof(struct nond_on_fs *), cmp_name);
		if (show_others)
			for (i = 0; i < nr_dir; i++)
				printf("%s%.*s%c", tag_other,
				       dir[i]->len, dir[i]->name,
				       line_terminator);
		if (show_killed)
			show_killed_files();
	}
	if (show_cached | show_stage) {
		for (i = 0; i < active_nr; i++) {
			struct cache_entry *ce = active_cache[i];
			if (excluded(ce->name) != show_ignored)
				continue;
			if (show_unmerged && !ce_stage(ce))
				continue;
			if (!show_stage)
				printf("%s%s%c",
				       ce_stage(ce) ? tag_unmerged :
				       tag_cached,
				       ce->name, line_terminator);
			else
				printf("%s%06o %s %d\t%s%c",
				       ce_stage(ce) ? tag_unmerged :
				       tag_cached,
				       ntohl(ce->ce_mode),
				       sha1_to_hex(ce->sha1),
				       ce_stage(ce),
				       ce->name, line_terminator); 
		}
	}
	if (show_deleted) {
		for (i = 0; i < active_nr; i++) {
			struct cache_entry *ce = active_cache[i];
			struct stat st;
			if (excluded(ce->name) != show_ignored)
				continue;
			if (!lstat(ce->name, &st))
				continue;
			printf("%s%s%c", tag_removed, ce->name,
			       line_terminator);
		}
	}
}

static const char *ls_files_usage =
	"git-ls-files [-z] [-t] (--[cached|deleted|others|stage|unmerged|killed])* "
	"[ --ignored [--exclude=<pattern>] [--exclude-from=<file>) ]";

int main(int argc, char **argv)
{
	int i;

	for (i = 1; i < argc; i++) {
		char *arg = argv[i];

		if (!strcmp(arg, "-z")) {
			line_terminator = 0;
		} else if (!strcmp(arg, "-t")) {
			tag_cached = "H ";
			tag_unmerged = "M ";
			tag_removed = "R ";
			tag_other = "? ";
			tag_killed = "K ";
		} else if (!strcmp(arg, "-c") || !strcmp(arg, "--cached")) {
			show_cached = 1;
		} else if (!strcmp(arg, "-d") || !strcmp(arg, "--deleted")) {
			show_deleted = 1;
		} else if (!strcmp(arg, "-o") || !strcmp(arg, "--others")) {
			show_others = 1;
		} else if (!strcmp(arg, "-i") || !strcmp(arg, "--ignored")) {
			show_ignored = 1;
		} else if (!strcmp(arg, "-s") || !strcmp(arg, "--stage")) {
			show_stage = 1;
		} else if (!strcmp(arg, "-k") || !strcmp(arg, "--killed")) {
			show_killed = 1;
		} else if (!strcmp(arg, "-u") || !strcmp(arg, "--unmerged")) {
			/* There's no point in showing unmerged unless
			 * you also show the stage information.
			 */
			show_stage = 1;
			show_unmerged = 1;
		} else if (!strcmp(arg, "-x") && i+1 < argc) {
			add_exclude(argv[++i]);
		} else if (!strncmp(arg, "--exclude=", 10)) {
			add_exclude(arg+10);
		} else if (!strcmp(arg, "-X") && i+1 < argc) {
			add_excludes_from_file(argv[++i]);
		} else if (!strncmp(arg, "--exclude-from=", 15)) {
			add_excludes_from_file(arg+15);
		} else
			usage(ls_files_usage);
	}

	if (show_ignored && !nr_excludes) {
		fprintf(stderr, "%s: --ignored needs some exclude pattern\n",
			argv[0]);
		exit(1);
	}

	/* With no flags, we default to showing the cached files */
	if (!(show_stage | show_deleted | show_others | show_unmerged | show_killed))
		show_cached = 1;

	read_cache();
	show_files();
	return 0;
}
Commit	Line	Data
8695c8bf LT	1	/*
	2	* This merges the file listing in the directory cache index
	3	* with the actual working directory list, and shows different
	4	* combinations of the two.
	5	*
	6	* Copyright (C) Linus Torvalds, 2005
	7	*/
	8	#include <dirent.h>
9ff768e9	9	#include <fnmatch.h>
8695c8bf LT	10
	11	#include "cache.h"
	12
	13	static int show_deleted = 0;
	14	static int show_cached = 0;
	15	static int show_others = 0;
	16	static int show_ignored = 0;
aee46198	17	static int show_stage = 0;
eec8c633	18	static int show_unmerged = 0;
6ca45943	19	static int show_killed = 0;
b83c8345	20	static int line_terminator = '\n';
8695c8bf	21
20d37ef6 PB	22	static const char *tag_cached = "";
	23	static const char *tag_unmerged = "";
	24	static const char *tag_removed = "";
	25	static const char *tag_other = "";
6ca45943	26	static const char *tag_killed = "";
20d37ef6	27
9ff768e9 NP	28	static int nr_excludes;
	29	static const char **excludes;
	30	static int excludes_alloc;
	31
	32	static void add_exclude(const char *string)
	33	{
	34	if (nr_excludes == excludes_alloc) {
	35	excludes_alloc = alloc_nr(excludes_alloc);
	36	excludes = realloc(excludes, excludes_allocsizeof(char ));
	37	}
	38	excludes[nr_excludes++] = string;
	39	}
	40
	41	static void add_excludes_from_file(const char *fname)
	42	{
	43	int fd, i;
	44	long size;
	45	char buf, entry;
	46
	47	fd = open(fname, O_RDONLY);
	48	if (fd < 0)
	49	goto err;
	50	size = lseek(fd, 0, SEEK_END);
	51	if (size < 0)
	52	goto err;
	53	lseek(fd, 0, SEEK_SET);
	54	if (size == 0) {
	55	close(fd);
	56	return;
	57	}
	58	buf = xmalloc(size);
	59	if (read(fd, buf, size) != size)
	60	goto err;
	61	close(fd);
	62
	63	entry = buf;
	64	for (i = 0; i < size; i++) {
	65	if (buf[i] == '\n') {
	66	if (entry != buf + i) {
	67	buf[i] = 0;
	68	add_exclude(entry);
	69	}
	70	entry = buf + i + 1;
	71	}
	72	}
	73	return;
	74
	75	err: perror(fname);
	76	exit(1);
	77	}
	78
	79	static int excluded(const char *pathname)
	80	{
	81	int i;
	82	if (nr_excludes) {
	83	const char *basename = strrchr(pathname, '/');
	84	basename = (basename) ? basename+1 : pathname;
	85	for (i = 0; i < nr_excludes; i++)
	86	if (fnmatch(excludes[i], basename, 0) == 0)
	87	return 1;
	88	}
	89	return 0;
	90	}
	91
6ca45943 JH	92	struct nond_on_fs {
	93	int len;
	94	char name[0];
	95	};
	96
	97	static struct nond_on_fs **dir;
8695c8bf LT	98	static int nr_dir;
	99	static int dir_alloc;
	100
	101	static void add_name(const char *pathname, int len)
	102	{
6ca45943	103	struct nond_on_fs *ent;
8695c8bf LT	104
	105	if (cache_name_pos(pathname, len) >= 0)
	106	return;
	107
	108	if (nr_dir == dir_alloc) {
	109	dir_alloc = alloc_nr(dir_alloc);
6ca45943	110	dir = xrealloc(dir, dir_alloc*sizeof(ent));
8695c8bf	111	}
6ca45943 JH	112	ent = xmalloc(sizeof(*ent) + len + 1);
	113	ent->len = len;
	114	memcpy(ent->name, pathname, len);
	115	dir[nr_dir++] = ent;
8695c8bf LT	116	}
	117
	118	/*
	119	* Read a directory tree. We currently ignore anything but
a15c1c60 JH	120	* directories, regular files and symlinks. That's because git
	121	* doesn't handle them at all yet. Maybe that will change some
	122	* day.
8695c8bf LT	123	*
8695c8bf LT	124	* Also, we currently ignore all names starting with a dot.
aebb2679	125	* That likely will not change.
8695c8bf LT	126	*/
	127	static void read_directory(const char path, const char base, int baselen)
	128	{
	129	DIR *dir = opendir(path);
	130
	131	if (dir) {
	132	struct dirent *de;
	133	char fullname[MAXPATHLEN + 1];
	134	memcpy(fullname, base, baselen);
	135
	136	while ((de = readdir(dir)) != NULL) {
	137	int len;
	138
c4ee2952 JH	139	if ((de->d_name[0] == '.') &&
	140	(de->d_name[1] == 0 \|\|
	141	!strcmp(de->d_name + 1, ".") \|\|
	142	!strcmp(de->d_name + 1, "git")))
8695c8bf	143	continue;
9ff768e9 NP	144	if (excluded(de->d_name) != show_ignored)
9ff768e9 NP	145	continue;
8695c8bf LT	146	len = strlen(de->d_name);
	147	memcpy(fullname + baselen, de->d_name, len+1);
	148
b6829693	149	switch (DTYPE(de)) {
8695c8bf LT	150	struct stat st;
	151	default:
	152	continue;
	153	case DT_UNKNOWN:
	154	if (lstat(fullname, &st))
	155	continue;
a15c1c60	156	if (S_ISREG(st.st_mode) \|\| S_ISLNK(st.st_mode))
8695c8bf LT	157	break;
	158	if (!S_ISDIR(st.st_mode))
	159	continue;
	160	/* fallthrough */
	161	case DT_DIR:
	162	memcpy(fullname + baselen + len, "/", 2);
20d37ef6 PB	163	read_directory(fullname, fullname,
20d37ef6 PB	164	baselen + len + 1);
8695c8bf LT	165	continue;
8695c8bf LT	166	case DT_REG:
a15c1c60	167	case DT_LNK:
8695c8bf LT	168	break;
	169	}
	170	add_name(fullname, baselen + len);
	171	}
	172	closedir(dir);
	173	}
	174	}
	175
	176	static int cmp_name(const void p1, const void p2)
	177	{
6ca45943 JH	178	const struct nond_on_fs e1 = (const struct nond_on_fs **)p1;
	179	const struct nond_on_fs e2 = (const struct nond_on_fs **)p2;
	180
	181	return cache_name_compare(e1->name, e1->len,
	182	e2->name, e2->len);
	183	}
8695c8bf	184
e99d59ff	185	static void show_killed_files(void)
6ca45943 JH	186	{
	187	int i;
	188	for (i = 0; i < nr_dir; i++) {
	189	struct nond_on_fs *ent = dir[i];
	190	char cp, sp;
	191	int pos, len, killed = 0;
	192
	193	for (cp = ent->name; cp - ent->name < ent->len; cp = sp + 1) {
	194	sp = strchr(cp, '/');
	195	if (!sp) {
	196	/* If ent->name is prefix of an entry in the
	197	* cache, it will be killed.
	198	*/
	199	pos = cache_name_pos(ent->name, ent->len);
	200	if (0 <= pos)
	201	die("bug in show-killed-files");
	202	pos = -pos - 1;
	203	while (pos < active_nr &&
	204	ce_stage(active_cache[pos]))
	205	pos++; /* skip unmerged */
	206	if (active_nr <= pos)
	207	break;
	208	/* pos points at a name immediately after
	209	* ent->name in the cache. Does it expect
	210	* ent->name to be a directory?
	211	*/
	212	len = ce_namelen(active_cache[pos]);
	213	if ((ent->len < len) &&
	214	!strncmp(active_cache[pos]->name,
	215	ent->name, ent->len) &&
	216	active_cache[pos]->name[ent->len] == '/')
	217	killed = 1;
	218	break;
	219	}
	220	if (0 <= cache_name_pos(ent->name, sp - ent->name)) {
	221	/* If any of the leading directories in
	222	* ent->name is registered in the cache,
	223	* ent->name will be killed.
	224	*/
	225	killed = 1;
	226	break;
	227	}
	228	}
	229	if (killed)
	230	printf("%s%.*s%c", tag_killed,
	231	dir[i]->len, dir[i]->name,
	232	line_terminator);
	233	}
8695c8bf LT	234	}
	235
	236	static void show_files(void)
	237	{
	238	int i;
	239
	240	/* For cached/deleted files we don't need to even do the readdir */
6ca45943	241	if (show_others \|\| show_killed) {
8695c8bf	242	read_directory(".", "", 0);
6ca45943 JH	243	qsort(dir, nr_dir, sizeof(struct nond_on_fs *), cmp_name);
	244	if (show_others)
	245	for (i = 0; i < nr_dir; i++)
	246	printf("%s%.*s%c", tag_other,
	247	dir[i]->len, dir[i]->name,
	248	line_terminator);
	249	if (show_killed)
	250	show_killed_files();
8695c8bf	251	}
aee46198	252	if (show_cached \| show_stage) {
8695c8bf LT	253	for (i = 0; i < active_nr; i++) {
8695c8bf LT	254	struct cache_entry *ce = active_cache[i];
9ff768e9 NP	255	if (excluded(ce->name) != show_ignored)
9ff768e9 NP	256	continue;
eec8c633 LT	257	if (show_unmerged && !ce_stage(ce))
eec8c633 LT	258	continue;
aee46198	259	if (!show_stage)
20d37ef6 PB	260	printf("%s%s%c",
	261	ce_stage(ce) ? tag_unmerged :
	262	tag_cached,
	263	ce->name, line_terminator);
aee46198	264	else
2eab945e	265	printf("%s%06o %s %d\t%s%c",
20d37ef6 PB	266	ce_stage(ce) ? tag_unmerged :
20d37ef6 PB	267	tag_cached,
aee46198 JH	268	ntohl(ce->ce_mode),
	269	sha1_to_hex(ce->sha1),
	270	ce_stage(ce),
aee46198	271	ce->name, line_terminator);
8695c8bf LT	272	}
	273	}
	274	if (show_deleted) {
	275	for (i = 0; i < active_nr; i++) {
	276	struct cache_entry *ce = active_cache[i];
	277	struct stat st;
9ff768e9 NP	278	if (excluded(ce->name) != show_ignored)
9ff768e9 NP	279	continue;
8ae0a8c5	280	if (!lstat(ce->name, &st))
8695c8bf	281	continue;
20d37ef6 PB	282	printf("%s%s%c", tag_removed, ce->name,
20d37ef6 PB	283	line_terminator);
8695c8bf LT	284	}
8695c8bf LT	285	}
8695c8bf LT	286	}
8695c8bf LT	287
17710391	288	static const char *ls_files_usage =
667bb59b	289	"git-ls-files [-z] [-t] (--[cached\|deleted\|others\|stage\|unmerged\|killed])* "
cf9a113d NP	290	"[ --ignored [--exclude=<pattern>] [--exclude-from=<file>) ]";
cf9a113d NP	291
8695c8bf LT	292	int main(int argc, char **argv)
	293	{
	294	int i;
	295
	296	for (i = 1; i < argc; i++) {
	297	char *arg = argv[i];
	298
b83c8345 JH	299	if (!strcmp(arg, "-z")) {
b83c8345 JH	300	line_terminator = 0;
20d37ef6 PB	301	} else if (!strcmp(arg, "-t")) {
	302	tag_cached = "H ";
	303	tag_unmerged = "M ";
	304	tag_removed = "R ";
	305	tag_other = "? ";
6ca45943	306	tag_killed = "K ";
cf9a113d	307	} else if (!strcmp(arg, "-c") \|\| !strcmp(arg, "--cached")) {
8695c8bf	308	show_cached = 1;
cf9a113d	309	} else if (!strcmp(arg, "-d") \|\| !strcmp(arg, "--deleted")) {
8695c8bf	310	show_deleted = 1;
cf9a113d	311	} else if (!strcmp(arg, "-o") \|\| !strcmp(arg, "--others")) {
8695c8bf	312	show_others = 1;
cf9a113d	313	} else if (!strcmp(arg, "-i") \|\| !strcmp(arg, "--ignored")) {
8695c8bf	314	show_ignored = 1;
cf9a113d	315	} else if (!strcmp(arg, "-s") \|\| !strcmp(arg, "--stage")) {
aee46198	316	show_stage = 1;
6ca45943 JH	317	} else if (!strcmp(arg, "-k") \|\| !strcmp(arg, "--killed")) {
6ca45943 JH	318	show_killed = 1;
cf9a113d	319	} else if (!strcmp(arg, "-u") \|\| !strcmp(arg, "--unmerged")) {
20d37ef6 PB	320	/* There's no point in showing unmerged unless
	321	* you also show the stage information.
	322	*/
eec8c633 LT	323	show_stage = 1;
eec8c633 LT	324	show_unmerged = 1;
cf9a113d	325	} else if (!strcmp(arg, "-x") && i+1 < argc) {
9ff768e9	326	add_exclude(argv[++i]);
cf9a113d	327	} else if (!strncmp(arg, "--exclude=", 10)) {
9ff768e9	328	add_exclude(arg+10);
cf9a113d	329	} else if (!strcmp(arg, "-X") && i+1 < argc) {
9ff768e9	330	add_excludes_from_file(argv[++i]);
cf9a113d	331	} else if (!strncmp(arg, "--exclude-from=", 15)) {
9ff768e9	332	add_excludes_from_file(arg+15);
cf9a113d	333	} else
17710391	334	usage(ls_files_usage);
9ff768e9 NP	335	}
	336
	337	if (show_ignored && !nr_excludes) {
20d37ef6 PB	338	fprintf(stderr, "%s: --ignored needs some exclude pattern\n",
20d37ef6 PB	339	argv[0]);
9ff768e9	340	exit(1);
8695c8bf LT	341	}
	342
	343	/* With no flags, we default to showing the cached files */
6ca45943	344	if (!(show_stage \| show_deleted \| show_others \| show_unmerged \| show_killed))
8695c8bf LT	345	show_cached = 1;
	346
	347	read_cache();
	348	show_files();
	349	return 0;
	350	}